Mark 13:11

But when they arrest you and deliver you up, do not worry beforehand, or premeditate what you will speak. But whatever is given you in that hour, speak that; for it is not you who speak, but the Holy Spirit.

Surrounding context

13:10 And the gospel must first be preached to all the nations.

13:11 But when they arrest you and deliver you up, do not worry beforehand, or premeditate what you will speak. But whatever is given you in that hour, speak that; for it is not you who speak, but the Holy Spirit.

13:12 Now brother will betray brother to death, and a father his child; and children will rise up against parents and cause them to be put to death.

Translation and sources